Saw set



-March 4 1924; 1,486,001

T. C. ALLISON SAW SET Filed Dec. 15, 1922 2 Sheets-Sheet 1 Mx,ulhuulllmlll anon wigs March 4, 1924.

T. C. ALLISON SAW SET Filed Dec. 15. 1922 2 Sheets-Sheet 2 VIII/7457 7aawucwcoz Patented Mar. 4, 1924.

UNITED STATES iasaeei THOMAS COOPER ALLISON, OF HCHENWALD, TENNESSEE.

Application filed December 15, 1922. Serial No. 607,131.

To all whom it may concern:

Be it known that I, THOMAS COOPER A1.- LISON, a citizen of the UnitedStates, residing at Hohenwald, in the'county' of Lewis and State ofTennessee, have invented a new and useful Saw Set, of which thefollowing is a specification.

This invention relates'to saw sets, the primary object of the inventionbeing to improve generally the construction as set forth in myapplication filed April 26, 1922, and bears Serial Number 556,611.

An object of the invention is to provide means for exerting an evenpressure on the setting dies of the device, to insure against breakingof the teeth from the saw blade during the setting operation.

A still further object of the invention is to provide means forsupporting a band saw in proper setting relation with the dies of thedevice.

With the foregoing andother objects in view which will appear as thedescription proceeds, the invention residesin the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed, may be made within thescope of what is claimed, without departing from. the spirit of theinvention.

Referring to the drawings Figure 1 is afront elevational, view of a sawsetting device constructed in accordance with the invention.

Figure 2 is a plan view thereof.

Figure 3 is a sectional view taken on line 33 of Figure 1. 7 H

Figure 4: is a perspective view of the upper die support.

Figure 5 is a sectional view taken on line 5-5 of Figure 1.

Figure 6 is a perspective View of one of the saw clamps.

Referring to the drawings in detail, the reference character 5designates the main or supporting bar which is square in cross sectionand provided with teeth 6 formed in the upper edge thereof.

The body portion of the device includes a U-shaped base 7 constructed toreceive the bar 5 which is designed to move therethrough, the base 7being however provided with a stationary jaw 8 and a flange 9 throughwhich the shank of jaw 10 moves to cooperate with the jaw 8 to clampasupport and secure 'the' device against movement. H r V As shown, thebody portion embodies opposed walls 11, between which the gears 12, 13and 14 operate, the gear 12 being'mounted-on the shaft 15, while thegear 13 is mounted on the shaft 16 and the gear 14 mountedon the shaft17 .7

This shaft 17 is movable vertically with respect to the shafts l5 and16, the shaft 17 being mounted in the enlarged openings 18 formed in thesidewalls of the body portion, to permit of such movement. The upperportion of the body is reduced as at 19 to accommodate the arms 20 ofthe bearing member or upper shaft support, grooves '21 being formed inthe side walls of the body portion to accommodate the inclined edges 22or the'arms 20 to insure a true vertical movement of the upper bearingmember. v Y

Openings 23 are provided in theibearing member and accommodate theshaft17 so that movement of the bearing member will result in a relativemovement of the shaft and setting dies supported therebyr Secured to theupper end of the body portion is a threaded bolt 24 that extends throughthe opening 25 in the upper end of the bear- 7 ing member, there beingprovided a winged nut 26 operating on the bolt to normally holdthebearing member in' various positions of adjustment, it beingunderstood that due to the vertical movement ofthe bearing member, thesetting dies tobe hereinafter morefully described, may be ad justed withrespect to each other.

A' coiled spring 27 is disposed between the bearing member and the upperend of the body portion as clearly shown by Figure 3 of the drawings,which coiled spring is designed to exert a pressure on the bearingmember to force the same into close engagement with the winged nut 26.

The shafts 16 and 17 are shown as extending beyond one of the side wallsof the body portion of the device which extensions are squared toreceive the setting dies 28 and 29, the setting dies having teeth, theteeth of one die passing between the adjacent teeth of the opposed dieto bend the saw teeth contacting therewith.

The dies are held in position by means of the nuts 30 that are shown aspositioned on the threaded extremities 31 of the shafts 16 and 17, itbeing understood that due to this construction, the dies may be, readilyand easily removed and replaced when it becomes necessary to repair thesame.

Adjustably mounted on the bar 5 and-disposed adjacent to the endsthereof, are the arms 32 that have openings at the lower ends thereof toaccommodate the bar 5. and permit the arms to be adjusted longitudinallyof the bar 5, screws 33 being provided to se- 7 cure the arms in theirpositions o-fadjustment.

.Atthe upper: ends of ths arms 32 are inwardly extendedportionsrffl ionlwhich the saw clamps 35 are adj ustably positioned, the

saw clamps being, formed with openings toaccommodate the inwardlyextended portions 3d and provided with set screws, 36, to secure thesawclamps in; their positions of adjustment.

Eachof these saw clamps comprises pairs of spaced arms 37 between which;the ordinary carpenters saw may be positioned and secured by meansof-thewinged screw 38.

,From therforegoingit willbe seen that due to the construction .ofthesesaw. clamps, .a.saw maybe supported at its ends in such away as tohold thevsameagamst vibration or movement when the saw is being movedthrough the, setting dies.

' vious that as the gears are rotated, the body portion being, secured.to a support, causes thebar 5 and saw. which inthe present instance is,indicated bythe-reference character 42 to move longitudinally ,of thebase .7, moving the .saw bladethrough the setting dies. to accomplishthe setting result.

What isclaimed is 1. In asawsennbody portion, gearing supported by thebody, portion, a pair of cooperating setting dies idisposed laterally ofthe body portion, a bar movable through the body having teeth in meshwith one of the gears to cause the bar to move through the body portionwhen the gears are rotated, saw supporting means on the bars, means forpermitting movement of one die with respect to the other die, and saidsaw supporting means adapted to support a saw to cause the teeth thereoftomove between th setting dies.

2. Ina saw set, a body portion, an upper shaft, a lower-shaft and anintermediate shaft supported by the body portion,, gears supported bythe shafts, setting dies supported by. the upper shaft; and intermediateshaft, said. body portion having elongated openings in which theuppershaft moves, a vertically movable bearing member hating openings: toreceive the up per shaft, means for-adjusting the upper shaft to adjustthe setting- -dies, a. bar haying teeth movable {through the bodyportion, and meshing with the-gearof the lower shaft, said bar: havingmeans for supponting asaw, andmeaus for rotating the setting. dies andmoving); the 7 bar through the body portion.

In a'saw setting,- deviee, a body portion, said body portion havingrgroovcs fOIhlQClLlH .theside-walls thereof, a bearing .member. movablein the: grooves-and having; openings, said body portion havingelongated. openings cooperating with the openings of the bearing member,an upper shaft positioned inthe elongated openings, an intermediateshaft, andea lower shaft, gearing supported by the shafts, setting dieson the upper andiintermedia-te shafts, means for adjusting the uppershaft with respect-to the intermediate shaft, and means for supportmg asaw to cause the teeththereofto. move between the setting dies.

In.v testimony that I claimthe Jforegroi-ngv as my own, I have hereto.aflixed my signature in the, presence oftwowitnesses.

THOMAS COOPER ALLISON. Witnesses F. A. GOODMAN, A. M. RASBE RY.

